//----------------------------------------------------------------------------
// Copyright(c) 2015-2020, Robert Kimball
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
//    this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//----------------------------------------------------------------------------

#pragma once

#include "HTTPPage.hpp"

#define MAX_ACTIVE_CONNECTIONS 3
#define HTTPD_PATH_LENGTH_MAX 256

class ProtocolTCP;

namespace http
{
    class Server;
}

typedef void (*PageRequestHandler)(http::Page* page, const char* url);
typedef void (*ErrorMessageHandler)(const char* message);
typedef bool (*AuthorizationHandler)(const char* username, const char* password, const char* url);

class http::Server
{
    friend class HTTPPage;

public:
    Server();
    void RegisterPageHandler(PageRequestHandler);
    void RegisterErrorHandler(ErrorMessageHandler);
    void RegisterAuthorizationHandler(AuthorizationHandler);

    void Initialize(InterfaceMAC& mac, ProtocolTCP& tcp, uint16_t port);

    void ProcessRequest(Page* page);

private:
    Server(Server&);

    static void ConnectionHandlerEntry(void*);
    void ConnectionHandler(void*);

    static void TaskEntry(void* param);
    void Task();

    Page PagePoolPages[MAX_ACTIVE_CONNECTIONS];
    void* PagePoolBuffer[MAX_ACTIVE_CONNECTIONS];
    osQueue PagePool;

    osThread Thread;

    TCPConnection* ListenerConnection;
    TCPConnection* CurrentConnection;

    PageRequestHandler PageHandler;
    ErrorMessageHandler ErrorHandler;
    AuthorizationHandler AuthHandler;
};
